﻿<common:LayoutAwarePage
    x:Name="pageRoot"
    x:Class="cnBlogs.Views.ArticleCategory"
    DataContext="{Binding DefaultViewModel, RelativeSource={RelativeSource Self}}"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:cnBlogs.Views"
    xmlns:common="using:cnBlogs.Common"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:controls="using:cnBlogs.Common.UserControls"
    mc:Ignorable="d">

    <Page.Resources>
        <!--
            Collection of grouped items displayed by this page, bound to a subset
            of the complete item list because items in groups cannot be virtualized
        -->
        <CollectionViewSource
            x:Name="groupedItemsViewSource"
            Source="{Binding CategoryVM}"
            IsSourceGrouped="true"
            ItemsPath="SubCategoryList"/>
    </Page.Resources>
    <common:LayoutAwarePage.BottomAppBar>
        <AppBar x:Name="bottomAppBar" Visibility="Collapsed">
            <Button x:Name="AddButton" Style="{StaticResource AddAppBarButtonStyle}" AutomationProperties.Name="添加到快速导航" Click="AddButton_Click_1"/>
        </AppBar>
    </common:LayoutAwarePage.BottomAppBar>
    <!--
        This grid acts as a root panel for the page that defines two rows:
        * Row 0 contains the back button and page title
        * Row 1 contains the rest of the page layout
    -->
    <Grid Style="{StaticResource LayoutRootStyle}">
        <Grid.RowDefinitions>
            <RowDefinition Height="140"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <controls:Backgound  Grid.RowSpan="2" />

        <!-- Horizontal scrolling grid used in most view states -->
        <Grid Grid.RowSpan="2">
            <SemanticZoom x:Name="semanticZoom">
                <SemanticZoom.ZoomedInView>
                    <GridView IsSynchronizedWithCurrentItem="False"
            x:Name="itemGridView"
            AutomationProperties.AutomationId="ItemGridView"
            AutomationProperties.Name="Grouped Items"
            Padding="116,137,40,46"
            ItemsSource="{Binding Source={StaticResource groupedItemsViewSource}}"
            ItemTemplate="{StaticResource gridvew_CategoryItem}" SelectionChanged="itemGridView_SelectionChanged_1"
            SelectionMode="Single" IsItemClickEnabled="True" ItemClick="itemGridView_ItemClick_1">

                        <GridView.ItemsPanel>
                            <ItemsPanelTemplate>
                                <VirtualizingStackPanel Orientation="Horizontal"/>
                            </ItemsPanelTemplate>
                        </GridView.ItemsPanel>
                        <GridView.GroupStyle>
                            <GroupStyle>
                                <GroupStyle.HeaderTemplate>
                                    <DataTemplate>
                                        <Grid>
                                            <Button BorderThickness="0" Click="Button_Click_1"
                                    AutomationProperties.Name="Group Title" VerticalContentAlignment="Center" HorizontalContentAlignment="Center">
                                                <StackPanel Orientation="Horizontal">
                                                    <TextBlock Text="{Binding CategoryName}" Margin="3,10,10,10" FontSize="24"/>
                                                    <TextBlock Text="新文章数量：" FontFamily="Segoe UI Symbol" VerticalAlignment="Bottom" Margin="0,10,0,10"/>
                                                    <TextBlock Foreground="Red" Text="{Binding DailyNewArticleCount}" VerticalAlignment="Bottom" FontFamily="Segoe UI Symbol" Margin="0,10,0,10"/>
                                                </StackPanel>
                                            </Button>
                                        </Grid>
                                    </DataTemplate>
                                </GroupStyle.HeaderTemplate>
                                <GroupStyle.Panel>
                                    <ItemsPanelTemplate>
                                        <VariableSizedWrapGrid Orientation="Vertical" Margin="0,0,80,0"/>
                                    </ItemsPanelTemplate>
                                </GroupStyle.Panel>
                            </GroupStyle>
                        </GridView.GroupStyle>
                    </GridView>
                </SemanticZoom.ZoomedInView>
                <SemanticZoom.ZoomedOutView>
                    <GridView x:Name="grid" HorizontalAlignment="Center" VerticalAlignment="Center" ItemsSource="{Binding View.CollectionGroups,Source={StaticResource groupedItemsViewSource}}">
                        <GridView.Resources>
                            <ItemsPanelTemplate x:Key="ItemsPanelTemplate1">
                                <WrapGrid Orientation="Horizontal" />
                            </ItemsPanelTemplate>
                        </GridView.Resources>
                        <GridView.ItemsPanel>
                            <StaticResource ResourceKey="ItemsPanelTemplate1"/>
                        </GridView.ItemsPanel>
                        <GridView.ItemTemplate>
                            <DataTemplate>
                                <TextBlock
                                Text="{Binding Group.CategoryName}"
                                FontFamily="Segoe UI Light"
                                FontSize="24"/>
                            </DataTemplate>
                        </GridView.ItemTemplate>

                    </GridView>
                </SemanticZoom.ZoomedOutView>
            </SemanticZoom>
        </Grid>


        <!-- Vertical scrolling list only used when snapped -->
        <ListView
            x:Name="itemListView"
            AutomationProperties.AutomationId="ItemListView"
            AutomationProperties.Name="Grouped Items"
            Grid.Row="1"
            Visibility="Collapsed"
            Margin="0,-10,0,0"
            Padding="10,0,0,60"
            ItemsSource="{Binding Source={StaticResource groupedItemsViewSource}}"
            ItemTemplate="{StaticResource Standard80ItemTemplate}"
            SelectionMode="None"
            IsSwipeEnabled="false">

            <ListView.GroupStyle>
                <GroupStyle>
                    <GroupStyle.HeaderTemplate>
                        <DataTemplate>
                            <Grid Margin="7,7,0,0">
                                <Button
                                    AutomationProperties.Name="Group Title"
                                    Style="{StaticResource TextPrimaryButtonStyle}">
                                    <StackPanel Orientation="Horizontal">
                                        <TextBlock Text="{Binding Title}" Margin="3,-7,10,10" Style="{StaticResource GroupHeaderTextStyle}" />
                                        <TextBlock Text="{StaticResource ChevronGlyph}" FontFamily="Segoe UI Symbol" Margin="0,-7,0,10" Style="{StaticResource GroupHeaderTextStyle}"/>
                                    </StackPanel>
                                </Button>
                            </Grid>
                        </DataTemplate>
                    </GroupStyle.HeaderTemplate>
                </GroupStyle>
            </ListView.GroupStyle>
        </ListView>

        <!-- Back button and page title -->
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <Button x:Name="backButton" Click="GoBack" IsEnabled="{Binding Frame.CanGoBack, ElementName=pageRoot}" Style="{StaticResource BackButtonStyle}"/>
            <TextBlock x:Name="pageTitle" Text="文章分类" Grid.Column="1" IsHitTestVisible="false" Style="{StaticResource PageHeaderTextStyle}"/>
        </Grid>

        <VisualStateManager.VisualStateGroups>

            <!-- Visual states reflect the application's view state -->
            <VisualStateGroup x:Name="ApplicationViewStates">
                <VisualState x:Name="FullScreenLandscape"/>
                <VisualState x:Name="Filled"/>

                <!-- The entire page respects the narrower 100-pixel margin convention for portrait -->
                <VisualState x:Name="FullScreenPortrait">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PortraitBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemGridView" Storyboard.TargetProperty="Padding">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="96,137,10,56"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>

                <!--
                    The back button and title have different styles when snapped, and the list representation is substituted
                    for the grid displayed in all other view states
                -->
                <VisualState x:Name="Snapped">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="pageTitle" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedPageHeaderTextStyle}"/>
                        </ObjectAnimationUsingKeyFrames>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemListView" Storyboard.TargetProperty="Visibility">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemGridView" Storyboard.TargetProperty="Visibility">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
    </Grid>
</common:LayoutAwarePage>
